bell ringer vs musician

bell ringer and musician both are nouns.

Word	Noun	Adjective	Verb	Adverb
bell ringer	Yes	No	No	No
musician	Yes	No	No	No

As nouns, musician is a hypernym of bell ringer; that is, musician is a word with a broader meaning than bell ringer:

Other hypernyms of bell ringer include instrumentalist, player.

bell ringer (noun)	musician (noun)
something that exactly succeeds in achieving its goal	artist who composes or conducts music as a profession
someone who plays musical handbells	someone who plays a music as a profession
a person who rings church bells (as for summoning the congregation)